Mount Yasur is a volcano located on Tanna Island in the Republic of Vanuatu, an archipelago nation in the South Pacific Ocean. It is considered one of the most active volcanoes in the world, with almost continuous strombolian eruptions that have been ongoing for over 800 years. Mount Yasur is approximately 361 meters high and has a large, circular summit crater that is accessible to visitors.

The eruptions of Mount Yasur typically involve the ejection of incandescent lava bombs, ash, and volcanic gas. These explosions can occur frequently and are often accompanied by loud, rumbling sounds. Visitors to Mount Yasur can observe the eruptions from designated viewing areas, with guided tours available to take visitors to the best vantage points.

Despite its active status, Mount Yasur is considered safe to visit as long as visitors follow the instructions of local guides and authorities. However, it is important to note that volcanic activity can be unpredictable, and there is always some level of risk associated with visiting an active volcano.